Electric switch.



P. KENNEDY.

ELECTRIC SWITCH. v APPLICATION FILED 001'. 26, 1908. RENEWED DBO. s,1911.

1,01 9,484,, Patented Mar. 5, 1912.

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" ATTORNEY P. KENNEDY.

ELEGTBIC SWITCH.

APQLIOATIOH FILED 00126, 1908. 'R1-1NEWED DEC. 6, 1911. 1,019,484.

Patented Mar. 5, 1912.

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+ mul lillllm UNITED STATES PATENT OFFICE.

PATRICK KENNEDY, OF NEW YORK, N. Y.-

ELECTRIC SWITCH.

Specification of Letters Patent.

Patented Mar. 5, 1912.

Application filed October 26, 1908, Serial Nc. 459,484. Renewed December6, 1911. Serial No. 664,278.

To all whom it may concern:

Be it known that I, PATRICK KENNEDY, a citizen of the United States,residing in the borough of Brooklyn, city, county, and State of NewYork, have invented certain I new and useful Improvements in ElectricSwitches; and I do hereby declare .the following to be a full, clear,and exact description of the invention, suc as will enable othersskilled in the art to which it appertains to make and use the same.

The primary objectof the invention is to provide a switch, tobe employedin a circuit feeding lamps or other translatingdevices, and whichshallbe eti'ectivefo close the main feeding circuit whenever any localswitch is closed to supply energy to any one of the individualtranslating devices, and to hold the circuit closed so long as any ofthe translating devices are taking current, and which shall openautomatically as soon as all of the local switches are opened.Furthermore, it is often necessary or desirable to employ, in connectionwith a supply 'current, a regulating device for regulating the output ofthe generator, such, for example, as the motor-driven regulator of myPatents Nos. 745.191 of November 24, 1903, and 800,114 of September 19,1905, or any other current-operated regulating device. In case motor orother current-operated portion of the regulator.

The objects of my invention are accomplished by means of the apparatusillustrated in the accompanying drawings, in which t Figure I is a sideelevation of my improved switch; Fig. 2 is a bottom plan view; Fig. 3 isan elevation of the left-hand end of Fig. 1 Fig. 4 is an elevation ofthe righthand end. of Fig. 1; Fig. 5 is a diagram of circuit connectionsincluding the motor of the regulator of my patents above named, and Fig.(3 is a diagram without the regulator-motor.

The switch comprises two magnets 1 and '2, the armaturcs of which arerespectively attached to the switch lever-arms 3 and 4, independentlypivoted on shaft 5 and limited in their movement away from the mag- .net1 is not excited, connects terminal 17 to terminal 18. This contactplate 14, and terminals 15, 1G, 17 and 18 control the circuit of theregulator motor as will be described in connection with Fig. 5.Lever-a-rm 4 carries contact plate 19 which, when mag.- net 2 is excitedconnects terminal 20 to terminal 21, to excite magnet- 1 through thecircuits which will now be described.

Referring to Fig. 5, the heavy line a represents the main feedingcircuit extending from generator A througlrswitch contacts 8 andterminals 10, series coil (1. on magnet 2, and lamps L. This circuitalso includes a potential. operated circuit-breaker SW which is arrangedto close the generator circuit automatically when the generatedelectromotivc force has risen sufficiently to warrant the connection ofthe generator to the feeding circuit, and to open automatically wheneverthe clectromotive force falls below that point. This may be accomplishedin various ways well known to electrical engineers, as, for example, inthe manner described in my patents above mentioned. Circuit 1) isconnected across circuit a and includes storage battery ll. Circuit 0 isa shunt across main circuit a, and includes contact plate 14 and switchterminals v17, 18 or 15, 16, depending upon the position of lever-arm 3,and rcgulator-motor M. Circuit (Z is a shunt across the main feedingcircuit a. and includes coils ll of magnet 1,

switch tern'linals 20 and 21 and contact plate 1!). Circuit 0 is ahigh-resistance shunt from the main circuit (a about main terminals1()--l0 of the switch.

\Vil'h the parts in the position showni in Fig. 5 no lamps are burningand, as $00 as the clectromotive force of generator A rises to theproper point to close circuit-brea'ker tv'lV, current will flow into thestorage oattcry, and at the same time motor M will be excited, to effectthe regulation, thntnigh circuit a, switch terminals 17, 18 and plate14. If the elcctromotive force of the generator 'falls below thecritical point switch ,SW will open and the charge to the storagebattery will stop. If now any one of the lamps on the feeding circuit isturned on current will flow from the generator, orv

storage-battery if the generator is not runnin through circuit a, andcircuit 6 ineluding high resistance coils e on magnet 2, and throu hcoils a on magnet 2, through the lamp an back to the negative terminalof the generator or storage-battery. This current excites magnet 2 aridbrings contact plate 19 into position to connect switch ter minals 20and 21. Current will then'flow through shunt d, including coils d ofswitch magnet 1 exciting that magnet,

which will attract its armature to lift lever=' arm 3 and close the mainlamp circuit 10--10. Current then flows in full volume to the lampsand-series coils a hold leverarm 4 up so'long as current flows to thelamps. At the same time contact is broken at switch terminals 17-18 andclosed at 15-16 thereby transferring motor M from 'the generator circuitto the battery circuit. -By virtue of this varrangement current willflow to motor M whenever the generator is running and whenever currentis flowing to the lamps, whetherthe generator is1running 'o'r'not. Themotor will thus perform its regulating action whenever the generator orstorage battery giving currentfiaut will stop when the generatorissstopped and no current is flowing to the lamps. As soon 7 positionsshown in Fi .f5. The diagram Fig. 6 1s identical with 5, with theexception that the connections of 40 as all the lampsare-turned 01f.fleverearm 4 will fall and the parts will regulator-motor M areomitted. It illustrates'the connections when no current-'actm.

ated regulator is :used, and will'bereadily understood from theforegoing description.

What I claim is:

1. A switch for electric currentsupply circuits, comprising mainterminals and. cooperating contacts controllingthe main cirreturn to thecuit, a shunt about said terminals includin a magnet, a supplementalcircuit. controlle by said magnet, mechanism included in saidsupplemental circuitj for controlling said main contacts, and anexciting coil on said first-named magnet included in series with themain circuit.

2. A switch for electric-supply circuits, comprising a magnet, a leverarm controlled by said magnet and carrying a contact plate, main circuitterminals cooperating with said contact plate, a second magnet,

a lever arm controlled by the second magnet ing with said contact plate,a second magnet,-

a lever arm controlled by the second magnet and carrying a secondcontact plate, supplemental terminals cooperating with the secondcontact plate, a coil on the second magnetshunted across the maincircuit terminals, a second coil on the second magnetin series with themain circuit, a coil on the first magnet the circuit of which iscontrolled by .the second contact terminals and I the second terminalplate, another contact plate on one of said lever arms, and circuitterminals coiiperating with the last named contact plate in the openedor the closed.

position of the last named lever arm. In te stimony whereof I aflix mysignature, iii-presence of two witnesses.

PATRICK KENNEDY. Witnesses:

WILLIAM H. DAVIS, Lanna B. PENFIELD.

